On Wed, 2007-08-29 at 10:06 +0800, Joshua, C.S. Chen wrote: > Hi folks, > My institute's mail server was upgraded to RHEL5 with dovecot 1.0-2.1rc5 > recently. And it uses PAM authentication which points to LDAP server. > Now from time to time it gets Error like
rc5 is pretty old. There are v1.0.x packages for RHEL5. > dovecot: Aug 29 09:23:59 Error: auth(default): > pam(joshua,192.168.177.52): pipe() failed: Too many open files Look at dovecot-auth process's list of open files: ls -l /proc/`pidof dovecot-auth`/fd/ How many are there and what are opened most of the time? > auth default: > passdb: > driver: pam > userdb: > driver: passwd Are you using also nss_ldap? See http://wiki.dovecot.org/AuthDatabase/Passwd. With rc5 you can't fix it properly, and that could also be the cause of your problems.
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